The ST-20 tunneling rig is ideal for sub-horizontal consolidation in tunnels with a work radius of between 1512 mm and 4696 mm (with the drilling mast horizontal at 0°). The useful stroke of the rotary allows treatments of up to 14 m (16 with the optional extension).
The drilling mast can be folded in at both ends, reducing the overall dimensions, to make the rig easier to transport both underground and on the road at the end of the job.
The machine has two motors (diesel and electric) of a suitable size for each single motor to perform all the drilling, traversing and positioning operations of the crawler.
The following drilling techniques can be applied using the ST-20:
– Rotation (with or without casing)
– Rotopercussion by means of Top Hammer (with or without casing)
– Rotopercussion by means of Down the Hole Hammer (with Tubex, Odex or Simmetrix superjews system)
ST-60 tunneling rig project was developed to meet the growing need for sub-horizontal consolidation in large-section tunnels using single-boom equipment working with the full section method as an excellent alternative to the double-boom type system traditionally used for this type of job.
The equipment is very flexible and fast to use, also in relation to the importance of the treatments to perform. To reach the maximum heading stroke points with respect to ground level, a special system of thrust blocks and sliding blocks was designed to reach these points in total safety. The machine has a mast for 19000 mm treatments in one pass and 24000 m treatments with matching chuck and optional extensions.
The maximum extension height at 0° with respect to ground level is 10700 mm.
The variability of the height of the thrust block axis of rotation from 850 mm to 4250 mm combined with the column extension allows a work radius of from 3700 mm to 6500 mm. Tunnel lining is over 180°.
Fitted with two motors (diesel and electric) for both drilling and traversing, guaranteeing performance also in case of a breakdown of one of the two units.
The following drilling techniques can be applied using the ST-60:
– Rotation (with or without casing)
– Rotopercussion by means of Top Hammer (with or without casing)
– Rotopercussion by means of Down the Hole Hammer (with Tubex, Odex or Simmetrix superjews system)
The ST-120 tunneling rig is the top of the Soilmec tunneling range.
Designed for the consolidation of large section tunnels it can be used for treatments up to a maximum of 21000 mm in one pass and 24000 mm with matching chuck. Heights of 10100 mm can be reached at the heading with the arms perfectly horizontal at 0°.
The main feature of the ST-120 positioner is the geometry of the two cradles that house the system of sliding blocks and telescopic arms, letting you work far from the face to consolidate (12000 mm) guaranteeing the greatest safety in operations underground. Furthermore, each of the single drilling arms is fully independent, driven by two separated power and remote control units.
The weight of the rig in operational layout, depending on the optional devices fitted and the configuration used, is between 110 and 120 tonnes.
The following drilling techniques can be applied using the ST-120:
– Rotation (with or without casing)
– Rotopercussion by means of Top Hammer (with or without casing)
– Rotopercussion by means of Down the Hole Hammer (with Tubex system or without casing)
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